code: def qfunc(U):
      qml.Hadamard(wires="a")
      qml.QubitUnitary(U, wires="a")
      qml.CNOT(wires=["b", "a"])
  
imports: from itertools import product
  import pytest
  from gate_data import I, Z, S, T, H, X
  from test_optimization.utils import check_matrix_equivalence
  import pennylane
  from pennylane import numpy
  from pennylane.wires import Wires
  from pennylane.transforms import unitary_to_rot
label_desc: Use image node_id 1 for calling a global function with example usage: qfunc(U) without return types